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Definition of dentate in English:

adjective

Of all 25 brain regions examined, the one that showed the strongest evidence of playing a role directly in the control of the locomotor activity itself was the dentate gyrus, which is a subregion of the hippocampus.

The large dentate nuclei are deeply fissured and subdivided into toothlike agglomerations of gray matter, the longest ones being near the middle of each nucleus.

Note the characteristic, toothlike appearance of the inferior surface of the dentate gyrus.